Shutter-fastener



(No Model.)' Q I G. H. BURROWS. SHUTTER FASTENER PatentedJan. 27, 1891.

I Vllllllllllllllll INVSNTSS na/m WITNESSES mg/ UNITED STATES PATENTOFFICE.

GEORGE H. BURROWQ'OF SOMERVILLE, ASSIGNOR TO UBERT K. PETTINGILL, OFBOSTON, MASSACHUSETTS.

SHUTTER-FASTENER.

SPECIFICATION forming part of Letters Patent No. 445,366, dated January27, 1891.

Application filed May 19, 1890. Serial Iiio. 352,313. (No model.)

To all "whom, it may concern.-

Be it known that I, GEORGE H. BURROWS, of Somerville, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Blind or Shutter Fasteners, of which thefollowing is a specification.

This invention has for its object to provide a simple and effectiveblind or shutter fast- I ener which shall engage the staples or fixedprojections on the window-sill and on the side of the building bygravitation, and thus insure the latching of the blind in either itsclosed or open position without the use of springs.

To this end the invention consists in the improved fastening devicewhich I will now proceed to describe.

In the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of the lower portion of a blindhaving my improved fastening device, the blind being shown in its closedposition and engaged with the staple 01' fixture on the win- (low-sill.Fig. 2 represents a bottom view of the portion of the blind shown inFig. 1. Fig. 3 represents a section on line 3 3 of Fig. 1, lookingtoward the right. Fig. it represents a perspective View of the movablepartof the fastener; and Fig. 5, a perspective view of the part that isaffixed to the blind, said parts being shown as detached from the blindand from each other.

The same letters of reference indicate the same parts in all of thefigures.

In the drawings, (t represents a blind or shutter of the usualconstruction, the same being mounted to swing on vertical hinges, whichare not shown. To the lower edge of the blind I attach by screws 6 e aplate 0', on

which is formed a socket c.

f represents a rod or spindle, which is inserted in the socket c, and isadapted to turn or rotate therein to a limited extent, said 5 spindleprojecting at its ends outside of the socket, as shown in Figs. 2 and 3.

g 9 represent arms formed on the ends of the spindlefand projectingtherefrom in a substantially horizontal direction. On the under sides ofsaid arms are formed downwardly-projecting lugs h h, the lower edges ofwhich are inclined or beveled, as shown in Figs. 3 and t. Both of thearms g project in one direction from the spindle f, so that theirweight, together with the weight of the lugs h it, causes them to swingdownwardly to position to engage a staple s on the window-sill b or acorresponding staple or fixture on the outer side of the building. I

d d represent downwardly-projcot-ing ears or stops formed on the plate0' and arrangedv opposite the inner ends of the lugs h It, said stopsbeing separated from the lugs by spaces 25 If of sufficient width toreceive the staples or fixtures on the window-sill and side of thebuilding.

W'hen the' blind is being swung from its open to its closed position,the lug h, which is at the inner side of the blind when the latter isclosed, strikes the staple s on the window-sill when the blind is nearlyclosed and rides over the top of said staple, the said lug and the armg, which supports it, being caused to rise while the lug is riding overthe staple, as shown in dotted lines in Fig. 1. As soon as the lug haspassed over the staple it drops by its own weight and that of the arm 9to the position shown in full lines in Figs. 1 and 3, the inner stop (1at the same time coming in contact with the outer side of the staples,as shown in Fig. 3, and thus arresting the closing movement of theblind. The blind is now held in its closed position by the bearing ofthe lug 7L on one side and the stop d on the other side of the staples.When the blind is being moved from its closed to its open position, theother lug 72. and stop (Z cooperate with the staple or fixture on theouter side of the building in the same manner that the inner lug h andstop (6 co-operate with the staple .9, each lug engaging thecorresponding staple by gravitation.

To limit the swinging movements of the arms g and their lugs h, Iprovide the socket c with a slot t and the spindlef with a pro jectionj, located within said slot. The slot is wider than the projection, asshown in Fig. 2, and its sides are arranged so that one side will arrestsaid projection and support the arms 9 g and lugs h h in the positionshown in full lines in Fig. 1 and in Fig. 3, while the other side ofsaid slot will arrest the projec tionj after the arms g have swungupwardly far enough to permit the lugs h to pass over the staples orfixtures with which they engage.

It will be seen that the described fastener is extremely simple inconstruction,comprising but two pieces, and that no springs are requiredto cause the engagement of the movable parts of the fastener with thestaples or fixtures on the building.

Although I have shown the stops d d as formed on the plate 0', that hasthe socket c, I do not limit myself to this particular construction, butmay form the stops (Z (Z on a separate piece which is attachedindependently to the blind.

I claim 1. The improved blind-fastener consisting of a flat socketedplate formed to bear on the lower edge of the blind and provided at oneend with downwardlyprojecting vertical stops, arranged to strike thestaples or fixtures 011 the window-sill and on the side of the building,anda rod or spindle fitted to rodownwardly-projecting beveled lugs, theinner ends of which are outside the stops on the socketed plate and areseparated from said stops by spaces t 25, adapted to receive the saidstaples or fixtures, as set forth.

2. The combination of a fiat socket formed to bear on the lower end of ablind, a rod or spindle f, fitted to turn in said socket and provided atits ends with substantially horizontal arms 9 and beveled lugs h, saidarms and lugs being adapted to rise and fall by the turning of thespindle in the socket, and the stops at d, aifixed to and projectingdownwardly from the lower edge of the blind and arranged opposite theinner ends of the lugs h and separated therefrom by spaces of sufficientwidth to receive the staples or fixtures on the building, as set forth.

In testimony whereof I have signed my name to this specificatiomin thepresence of two subscribing witnesses, this 16th day of May, A. I).1890.

GEO. l-I. BURROWS.

\Vitnesses:

H; W. BLANCHARD, Gno. M. MCCOY.

